摘要
随着我国城镇化的快速推进,为缓解日益突出的交通压力,轨道交通成为疏解城市交通的首要选择,但受地形、地质、周边建筑物等条件的影响,单洞双层隧道结构的选择是必然的,有必要系统开展单洞双层隧道修建技术的研究。本文依托深圳地铁一期工程罗湖站至大剧院站区间单洞双层矿山法隧道结构工点的实际情况,采用数值模拟、试验研究、现场验证等手段,对单洞双层隧道支护结构受力特征、变形规律、施工工法等进行了系统研究,得出了复杂地质条件下单洞双层隧道初期支护及二次衬砌内力、临时支撑轴力、锚杆轴力、周边位移、地表沉降随掌子面推进的变化规律,验证了支护结构、施工工法的合理性,并提出了相应的控制措施,研究成果为同类工程提供了一定的技术支撑。
With the rapid development of urbanization in China, rail transit has become the first choice to relieve the increasingly prominent traffic pressure. However T due to the influences of topography, geology, surrounding buildings and so on, the choice of single-tube doubleeck tunnel structure is inevitable, it is necessary to systematically study the construction technology of single-tube double-deck tunnel. Relying on the actual situation of single-tube double-deck tunnel construction site with mining method of Luohu Station to Dajuyuan Station of Shenzhen Metro Phase I Project, this paper concerns a systematic research on the stress characteristics of supporting structure, deformation law, construction method and the like of single-tube double-deck tunnel, by means of numerical simulation, experimental research, field verification and others, and obtains the changing law on internal force of the primary and secondary lining, axial force of temporary support, axial force of anchor bar, peripheral displacement, ground settlement in single-tube double-deck tunnel project under complicated geological conditions with the advancing change of working face. The rationality of supporting structure and construction method is verified, and the corresponding control measures are put forward. The research results could provide certain technical support for similar projects.
作者
李强
Li Qiang(China Railway Fifth Survey and Design Institute Group Co. Ltd., Beijing 102600, China)
出处
《铁道建筑技术》
2019年第2期93-96,112,共5页
Railway Construction Technology
关键词
单洞双层隧道
修建技术
数值模拟
试验研究
变化规律
控制措施
single-tube double-deck tunnel
construction technology
numerical simulation
experimental research
changing law
control measure
